When I'm writing up these mission reports, often I have to do research to understand some of the terms the ex-military folks use. This is one of the articles I studied to get a sense of Neil MacFayden's role as a SEAL sniper. Fortunately, it's written in civilian terms so we can understand what's involved, because it's far more than just point the rifle and shoot.
Who knew that:
Air temperature affects a bullet, as well. Cold air is denser than hot air and therefore creates more drag on a bullet. On the other hand, bullets can tear through hot air. But Army Ranger Sniper explains that because humidity often accompanies hot air, which will also affect the bullet, this is yet another variable to be considered. "And with winds and heat and humidity -- if you look at all the factors it's amazing you can hit anything."
Fascinating stuff, as well as a glimpse into their world as they keep us safe.